package com.iplay.principle.LSP;

import java.util.HashMap;

/**
 * @author dangwu
 * @since 2021/9/6 4:38 下午
 */
public class Test {
    public static void main(String[] args) {
        Son f = new Son();
        HashMap map = new HashMap();
        f.doSomething(map);

    }
}
